I read some feedback and they said that the 1 watts works betters for the users, you guys that work/study with wireless, is that true that the the doesn't work well or only some users wrote bad feedback?

I would say it depends (doesn't it always?). Some things to keep in mind. Are you going to use it for Windows or Linux and is it supported? Do you really need the N version (what is its use case?), do you have an 802.11n AP or is the price difference so negligible that you just want it for future use? As long as your OS supports it, I'd say go for the N...it's the way of the future for wireless.

I liked OSWP need to do OSCP still, but I would have liked to see a little about report writing / LEO (what they prefer or at least preferred) included in the class. When I wrote my report for the class, I wasn't sure if I was doing it right. I mean yeah, I passed, but doesn't tell me if my documentation was good.